- 根目录:
- drivers
- staging
- vt6656
- main_usb.c
/*
* Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* File: main_usb.c
*
* Purpose: driver entry for initial, open, close, tx and rx.
*
* Author: Lyndon Chen
*
* Date: Dec 8, 2005
*
* Functions:
*
* vt6656_probe - module initial (insmod) driver entry
* vnt_free_tx_bufs - free tx buffer function
* vnt_init_registers- initial MAC & BBP & RF internal registers.
*
* Revision History:
*/
#undef __NO_VERSION__
#include <linux/etherdevice.h>
#include <linux/file.h>
#include "device.h"
#include "card.h"
#include "baseband.h"
#include "mac.h"
#include "power.h"
#include "wcmd.h"
#include "rxtx.h"
#include "dpc.h"
#include "rf.h"
#include "firmware.h"
#include "usbpipe.h"
#include "channel.h"
#include "int.h"
/*
* define module options
*/
/* version information */
#define DRIVER_AUTHOR \
"VIA Networking Technologies, Inc., <lyndonchen@vntek.com.tw>"
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION(DEVICE_FULL_DRV_NAM);
#define RX_DESC_DEF0 64
static int vnt_rx_buffers = RX_DESC_DEF0;
module_param_named(rx_buffers, vnt_rx_buffers, int, 0644);
MODULE_PARM_DESC(rx_buffers, "Number of receive usb rx buffers");
#define TX_DESC_DEF0 64
static int vnt_tx_buffers = TX_DESC_DEF0;
module_param_named(tx_buffers, vnt_tx_buffers, int, 0644);
MODULE_PARM_DESC(tx_buffers, "Number of receive usb tx buffers");
#define RTS_THRESH_DEF 2347
#define FRAG_THRESH_DEF 2346
#define SHORT_RETRY_DEF 8
#define LONG_RETRY_DEF 4
/* BasebandType[] baseband type selected
0: indicate 802.11a type
1: indicate 802.11b type
2: indicate 802.11g type
*/
#define BBP_TYPE_DEF 2
/*
* Static vars definitions
*/
static struct usb_device_id vt6656_table[] = {
{USB_DEVICE(VNT_USB_VENDOR_ID, VNT_USB_PRODUCT_ID)},
{}
};
static void vnt_set_options(struct vnt_private *priv)
{
/* Set number of TX buffers */
if (vnt_tx_buffers < CB_MIN_TX_DESC || vnt_tx_buffers > CB_MAX_TX_DESC)
priv->num_tx_context = TX_DESC_DEF0;
else
priv->num_tx_context = vnt_tx_buffers;
/* Set number of RX buffers */
if (vnt_rx_buffers < CB_MIN_RX_DESC || vnt_rx_buffers > CB_MAX_RX_DESC)
priv->num_rcb = RX_DESC_DEF0;
else
priv->num_rcb = vnt_rx_buffers;
priv->short_retry_limit = SHORT_RETRY_DEF;
priv->long_retry_limit = LONG_RETRY_DEF;
priv->op_mode = NL80211_IFTYPE_UNSPECIFIED;
priv->bb_type = BBP_TYPE_DEF;
priv->packet_type = priv->bb_type;
priv->auto_fb_ctrl = AUTO_FB_0;
priv->preamble_type = 0;
priv->exist_sw_net_addr = false;
}
/*
* initialization of MAC & BBP registers
*/
static int vnt_init_registers(struct vnt_private *priv)
{
struct vnt_cmd_card_init *init_cmd = &priv->init_command;
struct vnt_rsp_card_init *init_rsp = &priv->init_response;
u8 antenna;
int ii;
int status = STATUS_SUCCESS;
u8 tmp;
u8 calib_tx_iq = 0, calib_tx_dc = 0, calib_rx_iq = 0;
dev_dbg(&priv->usb->dev, "---->INIbInitAdapter. [%d][%d]\n",
DEVICE_INIT_COLD, priv->packet_type);
if (!vnt_check_firmware_version(priv)) {
if (vnt_download_firmware(priv) == true) {
if (vnt_firmware_branch_to_sram(priv) == false) {
dev_dbg(&priv->usb->dev,
" vnt_firmware_branch_to_sram fail\n");
return false;
}
} else {
dev_dbg(&priv->usb->dev, "FIRMWAREbDownload fail\n");
return false;
}
}
if (!vnt_vt3184_init(priv)) {
dev_dbg(&priv->usb->dev, "vnt_vt3184_init fail\n");
return false;
}
init_cmd->init_class = DEVICE_INIT_COLD;
init_cmd->exist_sw_net_addr = priv->exist_sw_net_addr;
for (ii = 0; ii < 6; ii++)
init_cmd->sw_net_addr[ii] = priv->current_net_addr[ii];
init_cmd->short_retry_limit = priv->short_retry_limit;
init_cmd->long_retry_limit = priv->long_retry_limit;
/* issue card_init command to device */
status = vnt_control_out(priv,
MESSAGE_TYPE_CARDINIT, 0, 0,
sizeof(struct vnt_cmd_card_init), (u8 *)init_cmd);
if (status != STATUS_SUCCESS) {
dev_dbg(&priv->usb->dev, "Issue Card init fail\n");
return false;
}
status = vnt_control_in(priv, MESSAGE_TYPE_INIT_RSP, 0, 0,
sizeof(struct vnt_rsp_card_init), (u8 *)init_rsp);
if (status != STATUS_SUCCESS) {
dev_dbg(&priv->usb->dev,
"Cardinit request in status fail!\n");
return false;
}
/* local ID for AES functions */
status = vnt_control_in(priv, MESSAGE_TYPE_READ,
MAC_REG_LOCALID, MESSAGE_REQUEST_MACREG, 1,
&priv->local_id);
if (status != STATUS_SUCCESS)
return false;
/* do MACbSoftwareReset in MACvInitialize */
priv->top_ofdm_basic_rate = RATE_24M;
priv->top_cck_basic_rate = RATE_1M;
/* target to IF pin while programming to RF chip */
priv->power = 0xFF;
priv->cck_pwr = priv->eeprom[EEP_OFS_PWR_CCK];
priv->ofdm_pwr_g = priv->eeprom[EEP_OFS_PWR_OFDMG];
/* load power table */
for (ii = 0; ii < 14; ii++) {
priv->cck_pwr_tbl[ii] =
priv->eeprom[ii + EEP_OFS_CCK_PWR_TBL];
if (priv->cck_pwr_tbl[ii] == 0)
priv->cck_pwr_tbl[ii] = priv->cck_pwr;
priv->ofdm_pwr_tbl[ii] =
priv->eeprom[ii + EEP_OFS_OFDM_PWR_TBL];
if (priv->ofdm_pwr_tbl[ii] == 0)
priv->ofdm_pwr_tbl[ii] = priv->ofdm_pwr_g;
}
/*
* original zonetype is USA, but custom zonetype is Europe,
* then need to recover 12, 13, 14 channels with 11 channel
*/
for (ii = 11; ii < 14; ii++) {
priv->cck_pwr_tbl[ii] = priv->cck_pwr_tbl[10];
priv->ofdm_pwr_tbl[ii] = priv->ofdm_pwr_tbl[10];
}
priv->ofdm_pwr_a = 0x34; /* same as RFbMA2829SelectChannel */
/* load OFDM A power table */
for (ii = 0; ii < CB_MAX_CHANNEL_5G; ii++) {
priv->ofdm_a_pwr_tbl[ii] =
priv->eeprom[ii + EEP_OFS_OFDMA_PWR_TBL];
if (priv->ofdm_a_pwr_tbl[ii] == 0)
priv->ofdm_a_pwr_tbl[ii] = priv->ofdm_pwr_a;
}
antenna = priv->eeprom[EEP_OFS_ANTENNA];
if (antenna & EEP_ANTINV)
priv->tx_rx_ant_inv = true;
else
priv->tx_rx_ant_inv = false;
antenna &= (EEP_ANTENNA_AUX | EEP_ANTENNA_MAIN);
if (antenna == 0) /* if not set default is both */
antenna = (EEP_ANTENNA_AUX | EEP_ANTENNA_MAIN);
if (antenna == (EEP_ANTENNA_AUX | EEP_ANTENNA_MAIN)) {
priv->tx_antenna_mode = ANT_B;
priv->rx_antenna_sel = 1;
if (priv->tx_rx_ant_inv == true)
priv->rx_antenna_mode = ANT_A;
else
priv->rx_antenna_mode = ANT_B;
} else {
priv->rx_antenna_sel = 0;
if (antenna & EEP_ANTENNA_AUX) {
priv->tx_antenna_mode = ANT_A;
if (priv->tx_rx_ant_inv == true)
priv->rx_antenna_mode = ANT_B;
else
priv->rx_antenna_mode = ANT_A;
} else {
priv->tx_antenna_mode = ANT_B;
if (priv->tx_rx_ant_inv == true)
priv->rx_antenna_mode = ANT_A;
else
priv->rx_antenna_mode = ANT_B;
}
}
/* Set initial antenna mode */
vnt_set_antenna_mode(priv, priv->rx_antenna_mode);
/* get Auto Fall Back type */
priv->auto_fb_ctrl = AUTO_FB_0;
/* default Auto Mode */
priv->bb_type = BB_TYPE_11G;
/* get RFType */
priv->rf_type = init_rsp->rf_type;
/* load vt3266 calibration parameters in EEPROM */
if (priv->rf_type == RF_VT3226D0) {
if ((priv->eeprom[EEP_OFS_MAJOR_VER] == 0x1) &&
(priv->eeprom[EEP_OFS_MINOR_VER] >= 0x4)) {
calib_tx_iq = priv->eeprom[EEP_OFS_CALIB_TX_IQ];
calib_tx_dc = priv->eeprom[EEP_OFS_CALIB_TX_DC];
calib_rx_iq = priv->eeprom[EEP_OFS_CALIB_RX_IQ];
if (calib_tx_iq || calib_tx_dc || calib_rx_iq) {
/* CR255, enable TX/RX IQ and
DC compensation mode */
vnt_control_out_u8(priv,
MESSAGE_REQUEST_BBREG,
0xff,
0x03);
/* CR251, TX I/Q Imbalance Calibration */
vnt_control_out_u8(priv,
MESSAGE_REQUEST_BBREG,
0xfb,
calib_tx_iq);
/* CR252, TX DC-Offset Calibration */
vnt_control_out_u8(priv,
MESSAGE_REQUEST_BBREG,
0xfC,
calib_tx_dc);
/* CR253, RX I/Q Imbalance Calibration */
vnt_control_out_u8(priv,
MESSAGE_REQUEST_BBREG,
0xfd,
calib_rx_iq);
} else {
/* CR255, turn off
BB Calibration compensation */
vnt_control_out_u8(priv,
MESSAGE_REQUEST_BBREG,
0xff,
0x0);
}
}
}
/* get permanent network address */
memcpy(priv->permanent_net_addr, init_rsp->net_addr, 6);
ether_addr_copy(priv->current_net_addr, priv->permanent_net_addr);
/* if exist SW network address, use it */
dev_dbg(&priv->usb->dev, "Network address = %pM\n",
priv->current_net_addr);
/*
* set BB and packet type at the same time
* set Short Slot Time, xIFS, and RSPINF
*/
if (priv->bb_type == BB_TYPE_11A)
priv->short_slot_time = true;
else
priv->short_slot_time = false;
vnt_set_short_slot_time(priv);
priv->radio_ctl = priv->eeprom[EEP_OFS_RADIOCTL];
if ((priv->radio_ctl & EEP_RADIOCTL_ENABLE) != 0) {
status = vnt_control_in(priv, MESSAGE_TYPE_READ,
MAC_REG_GPIOCTL1, MESSAGE_REQUEST_MACREG, 1, &tmp);
if (status != STATUS_SUCCESS)
return false;
if ((tmp & GPIO3_DATA) == 0)
vnt_mac_reg_bits_on(priv, MAC_REG_GPIOCTL1,
GPIO3_INTMD);
else
vnt_mac_reg_bits_off(priv, MAC_REG_GPIOCTL1,
GPIO3_INTMD);
}
vnt_mac_set_led(priv, LEDSTS_TMLEN, 0x38);
vnt_mac_set_led(priv, LEDSTS_STS, LEDSTS_SLOW);
vnt_mac_reg_bits_on(priv, MAC_REG_GPIOCTL0, 0x01);
vnt_radio_power_on(priv);
dev_dbg(&priv->usb->dev, "<----INIbInitAdapter Exit\n");
return true;
}
static void vnt_free_tx_bufs(struct vnt_private *priv)
{
struct vnt_usb_send_context *tx_context;
int ii;
for (ii = 0; ii < priv->num_tx_context; ii++) {
tx_context = priv->tx_context[ii];
/* deallocate URBs */
if (tx_context->urb) {
usb_kill_urb(tx_context->urb);
usb_free_urb(tx_context->urb);
}
kfree(tx_context);
}
}
static void vnt_free_rx_bufs(struct vnt_private *priv)
{
struct vnt_rcb *rcb;
int ii;
for (ii = 0; ii < priv->num_rcb; ii++) {
rcb = priv->rcb[ii];
if (!rcb)
continue;
/* deallocate URBs */
if (rcb->urb) {
usb_kill_urb(rcb->urb);
usb_free_urb(rcb->urb);
}
/* deallocate skb */
if (rcb->skb)
dev_kfree_skb(rcb->skb);
kfree(rcb);
}
}
static void usb_device_reset(struct vnt_private *priv)
{
int status;
status = usb_reset_device(priv->usb);
if (status)
dev_warn(&priv->usb->dev,
"usb_device_reset fail status=%d\n", status);
}
static void vnt_free_int_bufs(struct vnt_private *priv)
{
kfree(priv->int_buf.data_buf);
}
static bool vnt_alloc_bufs(struct vnt_private *priv)
{
struct vnt_usb_send_context *tx_context;
struct vnt_rcb *rcb;
int ii;
for (ii = 0; ii < priv->num_tx_context; ii++) {
tx_context = kmalloc(sizeof(struct vnt_usb_send_context),
GFP_KERNEL);
if (tx_context == NULL)
goto free_tx;
priv->tx_context[ii] = tx_context;
tx_context->priv = priv;
tx_context->pkt_no = ii;
/* allocate URBs */
tx_context->urb = usb_alloc_urb(0, GFP_ATOMIC);
if (!tx_context->urb) {
dev_err(&priv->usb->dev, "alloc tx urb failed\n");
goto free_tx;
}
tx_context->in_use = false;
}
for (ii = 0; ii < priv->num_rcb; ii++) {
priv->rcb[ii] = kzalloc(sizeof(struct vnt_rcb), GFP_KERNEL);
if (!priv->rcb[ii]) {
dev_err(&priv->usb->dev,
"failed to allocate rcb no %d\n", ii);
goto free_rx_tx;
}
rcb = priv->rcb[ii];
rcb->priv = priv;
/* allocate URBs */
rcb->urb = usb_alloc_urb(0, GFP_ATOMIC);
if (rcb->urb == NULL) {
dev_err(&priv->usb->dev, "Failed to alloc rx urb\n");
goto free_rx_tx;
}
rcb->skb = dev_alloc_skb(priv->rx_buf_sz);
if (rcb->skb == NULL)
goto free_rx_tx;
rcb->in_use = false;
/* submit rx urb */
if (vnt_submit_rx_urb(priv, rcb))
goto free_rx_tx;
}
priv->interrupt_urb = usb_alloc_urb(0, GFP_ATOMIC);
if (priv->interrupt_urb == NULL) {
dev_err(&priv->usb->dev, "Failed to alloc int urb\n");
goto free_rx_tx;
}
priv->int_buf.data_buf = kmalloc(MAX_INTERRUPT_SIZE, GFP_KERNEL);
if (priv->int_buf.data_buf == NULL) {
usb_free_urb(priv->interrupt_urb);
goto free_rx_tx;
}
return true;
free_rx_tx:
vnt_free_rx_bufs(priv);
free_tx:
vnt_free_tx_bufs(priv);
return false;
}
static void vnt_tx_80211(struct ieee80211_hw *hw,
struct ieee80211_tx_control *control, struct sk_buff *skb)
{
struct vnt_private *priv = hw->priv;
if (vnt_tx_packet(priv, skb))
ieee80211_free_txskb(hw, skb);
}
static int vnt_start(struct ieee80211_hw *hw)
{
struct vnt_private *priv = hw->priv;
priv->rx_buf_sz = MAX_TOTAL_SIZE_WITH_ALL_HEADERS;
if (!vnt_alloc_bufs(priv)) {
dev_dbg(&priv->usb->dev, "vnt_alloc_bufs fail...\n");
return -ENOMEM;
}
clear_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags);
if (vnt_init_registers(priv) == false) {
dev_dbg(&priv->usb->dev, " init register fail\n");
goto free_all;
}
priv->int_interval = 1; /* bInterval is set to 1 */
vnt_int_start_interrupt(priv);
ieee80211_wake_queues(hw);
return 0;
free_all:
vnt_free_rx_bufs(priv);
vnt_free_tx_bufs(priv);
vnt_free_int_bufs(priv);
usb_kill_urb(priv->interrupt_urb);
usb_free_urb(priv->interrupt_urb);
return -ENOMEM;
}
static void vnt_stop(struct ieee80211_hw *hw)
{
struct vnt_private *priv = hw->priv;
int i;
if (!priv)
return;
for (i = 0; i < MAX_KEY_TABLE; i++)
vnt_mac_disable_keyentry(priv, i);
/* clear all keys */
priv->key_entry_inuse = 0;
if (!test_bit(DEVICE_FLAGS_UNPLUG, &priv->flags))
vnt_mac_shutdown(priv);
ieee80211_stop_queues(hw);
set_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags);
cancel_delayed_work_sync(&priv->run_command_work);
priv->cmd_running = false;
vnt_free_tx_bufs(priv);
vnt_free_rx_bufs(priv);
vnt_free_int_bufs(priv);
usb_kill_urb(priv->interrupt_urb);
usb_free_urb(priv->interrupt_urb);
}
static int vnt_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
{
struct vnt_private *priv = hw->priv;
priv->vif = vif;
switch (vif->type) {
case NL80211_IFTYPE_STATION:
break;
case NL80211_IFTYPE_ADHOC:
vnt_mac_reg_bits_off(priv, MAC_REG_RCR, RCR_UNICAST);
vnt_mac_reg_bits_on(priv, MAC_REG_HOSTCR, HOSTCR_ADHOC);
break;
case NL80211_IFTYPE_AP:
vnt_mac_reg_bits_off(priv, MAC_REG_RCR, RCR_UNICAST);
vnt_mac_reg_bits_on(priv, MAC_REG_HOSTCR, HOSTCR_AP);
break;
default:
return -EOPNOTSUPP;
}
priv->op_mode = vif->type;
vnt_set_bss_mode(priv);
/* LED blink on TX */
vnt_mac_set_led(priv, LEDSTS_STS, LEDSTS_INTER);
return 0;
}
static void vnt_remove_interface(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct vnt_private *priv = hw->priv;
switch (vif->type) {
case NL80211_IFTYPE_STATION:
break;
case NL80211_IFTYPE_ADHOC:
vnt_mac_reg_bits_off(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
vnt_mac_reg_bits_off(priv, MAC_REG_HOSTCR, HOSTCR_ADHOC);
break;
case NL80211_IFTYPE_AP:
vnt_mac_reg_bits_off(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
vnt_mac_reg_bits_off(priv, MAC_REG_HOSTCR, HOSTCR_AP);
break;
default:
break;
}
vnt_radio_power_off(priv);
priv->op_mode = NL80211_IFTYPE_UNSPECIFIED;
/* LED slow blink */
vnt_mac_set_led(priv, LEDSTS_STS, LEDSTS_SLOW);
}
static int vnt_config(struct ieee80211_hw *hw, u32 changed)
{
struct vnt_private *priv = hw->priv;
struct ieee80211_conf *conf = &hw->conf;
u8 bb_type;
if (changed & IEEE80211_CONF_CHANGE_PS) {
if (conf->flags & IEEE80211_CONF_PS)
vnt_enable_power_saving(priv, conf->listen_interval);
else
vnt_disable_power_saving(priv);
}
if ((changed & IEEE80211_CONF_CHANGE_CHANNEL) ||
(conf->flags & IEEE80211_CONF_OFFCHANNEL)) {
vnt_set_channel(priv, conf->chandef.chan->hw_value);
if (conf->chandef.chan->band == IEEE80211_BAND_5GHZ)
bb_type = BB_TYPE_11A;
else
bb_type = BB_TYPE_11G;
if (priv->bb_type != bb_type) {
priv->bb_type = bb_type;
vnt_set_bss_mode(priv);
}
}
if (changed & IEEE80211_CONF_CHANGE_POWER) {
if (priv->bb_type == BB_TYPE_11B)
priv->current_rate = RATE_1M;
else
priv->current_rate = RATE_54M;
vnt_rf_setpower(priv, priv->current_rate,
conf->chandef.chan->hw_value);
}
return 0;
}
static void vnt_bss_info_changed(struct ieee80211_hw *hw,
struct ieee80211_vif *vif, struct ieee80211_bss_conf *conf,
u32 changed)
{
struct vnt_private *priv = hw->priv;
priv->current_aid = conf->aid;
if (changed & BSS_CHANGED_BSSID && conf->bssid)
vnt_mac_set_bssid_addr(priv, (u8 *)conf->bssid);
if (changed & BSS_CHANGED_BASIC_RATES) {
priv->basic_rates = conf->basic_rates;
vnt_update_top_rates(priv);
dev_dbg(&priv->usb->dev, "basic rates %x\n", conf->basic_rates);
}
if (changed & BSS_CHANGED_ERP_PREAMBLE) {
if (conf->use_short_preamble) {
vnt_mac_enable_barker_preamble_mode(priv);
priv->preamble_type = true;
} else {
vnt_mac_disable_barker_preamble_mode(priv);
priv->preamble_type = false;
}
}
if (changed & BSS_CHANGED_ERP_CTS_PROT) {
if (conf->use_cts_prot)
vnt_mac_enable_protect_mode(priv);
else
vnt_mac_disable_protect_mode(priv);
}
if (changed & BSS_CHANGED_ERP_SLOT) {
if (conf->use_short_slot)
priv->short_slot_time = true;
else
priv->short_slot_time = false;
vnt_set_short_slot_time(priv);
vnt_set_vga_gain_offset(priv, priv->bb_vga[0]);
vnt_update_pre_ed_threshold(priv, false);
}
if (changed & BSS_CHANGED_TXPOWER)
vnt_rf_setpower(priv, priv->current_rate,
conf->chandef.chan->hw_value);
if (changed & BSS_CHANGED_BEACON_ENABLED) {
dev_dbg(&priv->usb->dev,
"Beacon enable %d\n", conf->enable_beacon);
if (conf->enable_beacon) {
vnt_beacon_enable(priv, vif, conf);
vnt_mac_reg_bits_on(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
} else {
vnt_mac_reg_bits_off(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
}
}
if (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INFO) &&
priv->op_mode != NL80211_IFTYPE_AP) {
if (conf->assoc && conf->beacon_rate) {
vnt_mac_reg_bits_on(priv, MAC_REG_TFTCTL,
TFTCTL_TSFCNTREN);
vnt_adjust_tsf(priv, conf->beacon_rate->hw_value,
conf->sync_tsf, priv->current_tsf);
vnt_mac_set_beacon_interval(priv, conf->beacon_int);
vnt_reset_next_tbtt(priv, conf->beacon_int);
} else {
vnt_clear_current_tsf(priv);
vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL,
TFTCTL_TSFCNTREN);
}
}
}
static u64 vnt_prepare_multicast(struct ieee80211_hw *hw,
struct netdev_hw_addr_list *mc_list)
{
struct vnt_private *priv = hw->priv;
struct netdev_hw_addr *ha;
u64 mc_filter = 0;
u32 bit_nr = 0;
netdev_hw_addr_list_for_each(ha, mc_list) {
bit_nr = ether_crc(ETH_ALEN, ha->addr) >> 26;
mc_filter |= 1ULL << (bit_nr & 0x3f);
}
priv->mc_list_count = mc_list->count;
return mc_filter;
}
static void vnt_configure(struct ieee80211_hw *hw,
unsigned int changed_flags, unsigned int *total_flags, u64 multicast)
{
struct vnt_private *priv = hw->priv;
u8 rx_mode = 0;
int rc;
*total_flags &= FIF_ALLMULTI | FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC;
rc = vnt_control_in(priv, MESSAGE_TYPE_READ, MAC_REG_RCR,
MESSAGE_REQUEST_MACREG, sizeof(u8), &rx_mode);
if (!rc)
rx_mode = RCR_MULTICAST | RCR_BROADCAST;
dev_dbg(&priv->usb->dev, "rx mode in = %x\n", rx_mode);
if (changed_flags & FIF_ALLMULTI) {
if (*total_flags & FIF_ALLMULTI) {
if (priv->mc_list_count > 2)
vnt_mac_set_filter(priv, ~0);
else
vnt_mac_set_filter(priv, multicast);
rx_mode |= RCR_MULTICAST | RCR_BROADCAST;
} else {
rx_mode &= ~(RCR_MULTICAST | RCR_BROADCAST);
}
}
if (changed_flags & (FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC)) {
if (*total_flags & (FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC))
rx_mode &= ~RCR_BSSID;
else
rx_mode |= RCR_BSSID;
}
vnt_control_out_u8(priv, MESSAGE_REQUEST_MACREG, MAC_REG_RCR, rx_mode);
dev_dbg(&priv->usb->dev, "rx mode out= %x\n", rx_mode);
}
static int vnt_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
struct ieee80211_vif *vif, struct ieee80211_sta *sta,
struct ieee80211_key_conf *key)
{
struct vnt_private *priv = hw->priv;
switch (cmd) {
case SET_KEY:
if (vnt_set_keys(hw, sta, vif, key))
return -EOPNOTSUPP;
break;
case DISABLE_KEY:
if (test_bit(key->hw_key_idx, &priv->key_entry_inuse))
clear_bit(key->hw_key_idx, &priv->key_entry_inuse);
default:
break;
}
return 0;
}
static void vnt_sw_scan_start(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
const u8 *addr)
{
struct vnt_private *priv = hw->priv;
vnt_set_bss_mode(priv);
/* Set max sensitivity*/
vnt_update_pre_ed_threshold(priv, true);
}
static void vnt_sw_scan_complete(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct vnt_private *priv = hw->priv;
/* Return sensitivity to channel level*/
vnt_update_pre_ed_threshold(priv, false);
}
static int vnt_get_stats(struct ieee80211_hw *hw,
struct ieee80211_low_level_stats *stats)
{
struct vnt_private *priv = hw->priv;
memcpy(stats, &priv->low_stats, sizeof(*stats));
return 0;
}
static u64 vnt_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
{
struct vnt_private *priv = hw->priv;
return priv->current_tsf;
}
static void vnt_set_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
u64 tsf)
{
struct vnt_private *priv = hw->priv;
vnt_update_next_tbtt(priv, tsf, vif->bss_conf.beacon_int);
}
static void vnt_reset_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
{
struct vnt_private *priv = hw->priv;
vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
vnt_clear_current_tsf(priv);
}
static const struct ieee80211_ops vnt_mac_ops = {
.tx = vnt_tx_80211,
.start = vnt_start,
.stop = vnt_stop,
.add_interface = vnt_add_interface,
.remove_interface = vnt_remove_interface,
.config = vnt_config,
.bss_info_changed = vnt_bss_info_changed,
.prepare_multicast = vnt_prepare_multicast,
.configure_filter = vnt_configure,
.set_key = vnt_set_key,
.sw_scan_start = vnt_sw_scan_start,
.sw_scan_complete = vnt_sw_scan_complete,
.get_stats = vnt_get_stats,
.get_tsf = vnt_get_tsf,
.set_tsf = vnt_set_tsf,
.reset_tsf = vnt_reset_tsf,
};
int vnt_init(struct vnt_private *priv)
{
if (!(vnt_init_registers(priv)))
return -EAGAIN;
SET_IEEE80211_PERM_ADDR(priv->hw, priv->permanent_net_addr);
vnt_init_bands(priv);
if (ieee80211_register_hw(priv->hw))
return -ENODEV;
priv->mac_hw = true;
vnt_radio_power_off(priv);
return 0;
}
static int
vt6656_probe(struct usb_interface *intf, const struct usb_device_id *id)
{
struct usb_device *udev;
struct vnt_private *priv;
struct ieee80211_hw *hw;
struct wiphy *wiphy;
int rc = 0;
udev = usb_get_dev(interface_to_usbdev(intf));
dev_notice(&udev->dev, "%s Ver. %s\n",
DEVICE_FULL_DRV_NAM, DEVICE_VERSION);
dev_notice(&udev->dev,
"Copyright (c) 2004 VIA Networking Technologies, Inc.\n");
hw = ieee80211_alloc_hw(sizeof(struct vnt_private), &vnt_mac_ops);
if (!hw) {
dev_err(&udev->dev, "could not register ieee80211_hw\n");
rc = -ENOMEM;
goto err_nomem;
}
priv = hw->priv;
priv->hw = hw;
priv->usb = udev;
vnt_set_options(priv);
spin_lock_init(&priv->lock);
mutex_init(&priv->usb_lock);
INIT_DELAYED_WORK(&priv->run_command_work, vnt_run_command);
usb_set_intfdata(intf, priv);
wiphy = priv->hw->wiphy;
wiphy->frag_threshold = FRAG_THRESH_DEF;
wiphy->rts_threshold = RTS_THRESH_DEF;
wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_AP);
ieee80211_hw_set(priv->hw, TIMING_BEACON_ONLY);
ieee80211_hw_set(priv->hw, SIGNAL_DBM);
ieee80211_hw_set(priv->hw, RX_INCLUDES_FCS);
ieee80211_hw_set(priv->hw, REPORTS_TX_ACK_STATUS);
ieee80211_hw_set(priv->hw, SUPPORTS_PS);
priv->hw->max_signal = 100;
SET_IEEE80211_DEV(priv->hw, &intf->dev);
usb_device_reset(priv);
clear_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags);
vnt_reset_command_timer(priv);
vnt_schedule_command(priv, WLAN_CMD_INIT_MAC80211);
return 0;
err_nomem:
usb_put_dev(udev);
return rc;
}
static void vt6656_disconnect(struct usb_interface *intf)
{
struct vnt_private *priv = usb_get_intfdata(intf);
if (!priv)
return;
if (priv->mac_hw)
ieee80211_unregister_hw(priv->hw);
usb_set_intfdata(intf, NULL);
usb_put_dev(interface_to_usbdev(intf));
set_bit(DEVICE_FLAGS_UNPLUG, &priv->flags);
ieee80211_free_hw(priv->hw);
}
#ifdef CONFIG_PM
static int vt6656_suspend(struct usb_interface *intf, pm_message_t message)
{
return 0;
}
static int vt6656_resume(struct usb_interface *intf)
{
return 0;
}
#endif /* CONFIG_PM */
MODULE_DEVICE_TABLE(usb, vt6656_table);
static struct usb_driver vt6656_driver = {
.name = DEVICE_NAME,
.probe = vt6656_probe,
.disconnect = vt6656_disconnect,
.id_table = vt6656_table,
#ifdef CONFIG_PM
.suspend = vt6656_suspend,
.resume = vt6656_resume,
#endif /* CONFIG_PM */
};
module_usb_driver(vt6656_driver);